From 915f53cdc1589b760460a6b04c1960113b888910 Mon Sep 17 00:00:00 2001 From: Mark Tearle Date: Sat, 9 Apr 2005 14:17:30 +0000 Subject: [PATCH] Major surgery mostly complete Main loop that was work of the devil replaced with a state table Code now broken out into smaller chunks ... that should be extensible. New lights in UCC burn ... UCC hackers not used to bright light! Still needs a bit more TLC before being put into production. --- sql-edition/servers/VendServer.py | 462 ++++++++++++++++++++---------- 1 file changed, 303 insertions(+), 159 deletions(-) diff --git a/sql-edition/servers/VendServer.py b/sql-edition/servers/VendServer.py index c1ef276..2adc4e1 100755 --- a/sql-edition/servers/VendServer.py +++ b/sql-edition/servers/VendServer.py @@ -44,6 +44,14 @@ SWITCH = 2 KEY = 3 TICK = 4 + +STATE_IDLE = 1 +STATE_DOOR_OPENING = 2 +STATE_DOOR_CLOSING = 3 +STATE_GETTING_UID = 4 +STATE_GETTING_PIN = 5 +STATE_GET_SELECTION = 6 + class DispenseDatabaseException(Exception): pass class DispenseDatabase: @@ -141,21 +149,6 @@ def verify_user_pin(uid, pin): logging.info('refused pin for uid %d'%(uid)) return None -def door_open_mode(v): - logging.warning("Entering open door mode") - v.display("-FEED ME-") - while True: - e = v.next_event() - if e == None: break - (event, params) = e - if event == TICK: break - - if event == DOOR: - if params == 1: # door closed - logging.warning('Leaving open door mode') - v.display("-YUM YUM!-") - sleep(1) - return def cookie(v): seed(time()) @@ -214,12 +207,12 @@ def setup_idlers(v): StringIdler(v), TrainIdler(v), ] - disabled = [ + disabled = [ ] idler = choose_idler() def choose_idler(): - global idler + global idlers, idler iiindex = 0 if idler: @@ -243,21 +236,22 @@ def idle_step(): class VendState: def __init__(self,v): + self.state_table = {} + self.state = STATE_IDLE + self.counter = 0 + self.mk = MessageKeeper(v) self.cur_user = '' self.cur_pin = '' + self.username = '' self.cur_selection = '' self.time_to_autologout = None + self.time_to_idle = None + self.last_timeout_refresh = None -def handle_door_event(event, params, v, vstatus): - if params == 0: - door_open_mode(v); - vstatus.cur_user = '' - vstatus.cur_pin = '' - vstatus.mk.set_message(GREETING) def handle_tick_event(event, params, v, vstatus): # don't care right now. @@ -267,40 +261,146 @@ def handle_switch_event(event, params, v, vstatus): # don't care right now. pass -def handle_key_event(event, params, v, vstatus): + +def do_nothing(state, event, params, v, vstatus): + print "doing nothing (s,e,p)", state, " ", event, " ", params + pass + +def handle_getting_uid_idle(state, event, params, v, vstatus): + # don't care right now. + pass + +def handle_getting_pin_idle(state, event, params, v, vstatus): + # don't care right now. + pass + +def handle_get_selection_idle(state, event, params, v, vstatus): + # don't care right now. + ### + ### State logging out .. + if vstatus.time_to_autologout != None: + time_left = vstatus.time_to_autologout - time() + if time_left < 6 and (vstatus.last_timeout_refresh is None or vstatus.last_timeout_refresh > time_left): + vstatus.mk.set_message('LOGOUT: '+str(int(time_left))) + vstatus.last_timeout_refresh = int(time_left) + vstatus.cur_selection = '' + + if vstatus.time_to_autologout != None and vstatus.time_to_autologout - time() <= 0: + vstatus.time_to_autologout = None + vstatus.cur_user = '' + vstatus.cur_pin = '' + vstatus.cur_selection = '' + + idle_in(vstatus,2) + vstatus.state = STATE_IDLE + + vstatus.mk.set_message(GREETING) + + ### State fully logged out ... reset variables + if vstatus.time_to_autologout and not vstatus.mk.done(): + vstatus.time_to_autologout = None + if vstatus.cur_user == '' and vstatus.time_to_autologout: + vstatus.time_to_autologout = None + + ### State logged in + if len(vstatus.cur_pin) == PIN_LENGTH and vstatus.mk.done() and vstatus.time_to_autologout == None: + # start autologout + vstatus.time_to_autologout = time() + 15 + vstatus.last_timeout_refresh = None + + ### State logged out ... after normal logout?? + # perhaps when logged in? + if vstatus.time_to_idle is not None and vstatus.cur_user != '': + vstatus.time_to_idle = None + + + ## FIXME - this may need to be elsewhere..... + # need to check + vstatus.mk.update_display() + + + +def handle_get_selection_key(state, event, params, v, vstatus): key = params - # complicated key handling here: - if len(vstatus.cur_user) < 5: + if len(vstatus.cur_selection) == 0: if key == 11: + vstatus.cur_pin = '' vstatus.cur_user = '' - vstatus.mk.set_message(GREETING) + vstatus.cur_selection = '' + + idle_in(vstatus,2) + vstatus.state = STATE_IDLE + + vstatus.mk.set_messages( + [(center('BYE!'), False, 1.5), + (GREETING, False, None)]) return - vstatus.cur_user += chr(key + ord('0')) - vstatus.mk.set_message('UID: '+vstatus.cur_user) - if len(vstatus.cur_user) == 5: - uid = int(vstatus.cur_user) - if not has_good_pin(uid): - logging.info('user '+vstatus.cur_user+' has a bad PIN') - #mk.set_messages( - #[(center('INVALID'), False, 0.7), - #(center('PIN'), False, 0.7), - #(center('SETUP'), False, 1.0), - #(GREETING, False, None)]) - vstatus.mk.set_messages( - [(' '*10+'INVALID PIN SETUP'+' '*10, False, 3), - (GREETING, False, None)]) - vstatus.cur_user = '' - vstatus.cur_pin = '' - return - vstatus.cur_pin = '' - vstatus.mk.set_message('PIN: ') - logging.info('need pin for user %s'%vstatus.cur_user) + vstatus.cur_selection += chr(key + ord('0')) + vstatus.mk.set_message('SELECT: '+vstatus.cur_selection) + vstatus.time_to_autologout = None + elif len(vstatus.cur_selection) == 1: + if key == 11: + vstatus.cur_selection = '' + vstatus.time_to_autologout = None + scroll_options(vstatus.username, vstatus.mk) return - elif len(vstatus.cur_pin) < PIN_LENGTH: + else: + vstatus.cur_selection += chr(key + ord('0')) + make_selection(v,vstatus) + vstatus.cur_selection = '' + vstatus.time_to_autologout = time() + 8 + vstatus.last_timeout_refresh = None + +def make_selection(v, vstatus): + # should use sudo here + if vstatus.cur_selection == '55': + vstatus.mk.set_message('OPENSESAME') + logging.info('dispensing a door for %s'%vstatus.username) + if geteuid() == 0: + ret = os.system('su - "%s" -c "dispense door"'%vstatus.username) + else: + ret = os.system('dispense door') + if ret == 0: + logging.info('door opened') + vstatus.mk.set_message(center('DOOR OPEN')) + else: + logging.warning('user %s tried to dispense a bad door'%vstatus.username) + vstatus.mk.set_message(center('BAD DOOR')) + sleep(1) + elif vstatus.cur_selection == '91': + cookie(v) + elif vstatus.cur_selection == '99': + scroll_options(vstatus.username, vstatus.mk) + vstatus.cur_selection = '' + return + elif vstatus.cur_selection[1] == '8': + v.display('GOT COKE?') + if ((os.system('su - "%s" -c "dispense %s"'%(vstatus.username, vstatus.cur_selection[0])) >> 8) != 0): + v.display('SEEMS NOT') + else: + v.display('GOT COKE!') + else: + v.display(vstatus.cur_selection+' - $1.00') + if ((os.system('su - "%s" -c "dispense snack"'%(vstatus.username)) >> 8) == 0): + v.vend(vstatus.cur_selection) + v.display('THANK YOU') + else: + v.display('NO MONEY?') + sleep(1) + + +def handle_getting_pin_key(state, event, params, v, vstatus): + #print "handle_getting_pin_key (s,e,p)", state, " ", event, " ", params + key = params + if len(vstatus.cur_pin) < PIN_LENGTH: if key == 11: if vstatus.cur_pin == '': vstatus.cur_user = '' vstatus.mk.set_message(GREETING) + + idle_in(vstatus,5) + vstatus.state = STATE_IDLE + return vstatus.cur_pin = '' vstatus.mk.set_message('PIN: ') @@ -308,11 +408,12 @@ def handle_key_event(event, params, v, vstatus): vstatus.cur_pin += chr(key + ord('0')) vstatus.mk.set_message('PIN: '+'X'*len(vstatus.cur_pin)) if len(vstatus.cur_pin) == PIN_LENGTH: - username = verify_user_pin(int(vstatus.cur_user), int(vstatus.cur_pin)) - if username: + vstatus.username = verify_user_pin(int(vstatus.cur_user), int(vstatus.cur_pin)) + if vstatus.username: v.beep(0, False) vstatus.cur_selection = '' - scroll_options(username, vstatus.mk, True) + vstatus.state = STATE_GET_SELECTION + scroll_options(vstatus.username, vstatus.mk, True) return else: v.beep(40, False) @@ -322,71 +423,154 @@ def handle_key_event(event, params, v, vstatus): (GREETING, False, None)]) vstatus.cur_user = '' vstatus.cur_pin = '' + + idle_in(vstatus,5) + vstatus.state = STATE_IDLE + return - elif len(vstatus.cur_selection) == 0: + + +def handle_getting_uid_key(state, event, params, v, vstatus): + #print "handle_getting_uid_key (s,e,p)", state, " ", event, " ", params + key = params + # complicated key handling here: + if len(vstatus.cur_user) < 5: if key == 11: - vstatus.cur_pin = '' vstatus.cur_user = '' - vstatus.cur_selection = '' + vstatus.mk.set_message(GREETING) + + idle_in(vstatus,5) + vstatus.state = STATE_IDLE + return + + vstatus.cur_user += chr(key + ord('0')) + vstatus.mk.set_message('UID: '+vstatus.cur_user) + + if len(vstatus.cur_user) == 5: + uid = int(vstatus.cur_user) + if not has_good_pin(uid): + logging.info('user '+vstatus.cur_user+' has a bad PIN') vstatus.mk.set_messages( - [(center('BYE!'), False, 1.5), + [(' '*10+'INVALID PIN SETUP'+' '*10, False, 3), (GREETING, False, None)]) + vstatus.cur_user = '' + vstatus.cur_pin = '' + + idle_in(vstatus,5) + vstatus.state = STATE_IDLE + return - vstatus.cur_selection += chr(key + ord('0')) - vstatus.mk.set_message('SELECT: '+vstatus.cur_selection) - vstatus.time_to_autologout = None - elif len(vstatus.cur_selection) == 1: - if key == 11: - vstatus.cur_selection = '' - vstatus.time_to_autologout = None - scroll_options(username, vstatus.mk) - return - else: - vstatus.cur_selection += chr(key + ord('0')) - #make_selection(cur_selection) - # XXX this should move somewhere else: - if vstatus.cur_selection == '55': - vstatus.mk.set_message('OPENSESAME') - logging.info('dispensing a door for %s'%username) - if geteuid() == 0: - ret = os.system('su - "%s" -c "dispense door"'%username) - else: - ret = os.system('dispense door') - if ret == 0: - logging.info('door opened') - vstatus.mk.set_message(center('DOOR OPEN')) - else: - logging.warning('user %s tried to dispense a bad door'%username) - vstatus.mk.set_message(center('BAD DOOR')) - sleep(1) - elif vstatus.cur_selection == '91': - cookie(v) - elif vstatus.cur_selection == '99': - scroll_options(username, vstatus.mk) - vstatus.cur_selection = '' - return - elif vstatus.cur_selection[1] == '8': - v.display('GOT COKE?') - if ((os.system('su - "%s" -c "dispense %s"'%(username, vstatus.cur_selection[0])) >> 8) != 0): - v.display('SEEMS NOT') - else: - v.display('GOT COKE!') - else: - v.display(vstatus.cur_selection+' - $1.00') - if ((os.system('su - "%s" -c "dispense snack"'%(username)) >> 8) == 0): - v.vend(vstatus.cur_selection) - v.display('THANK YOU') - else: - v.display('NO MONEY?') - sleep(1) - vstatus.cur_selection = '' - vstatus.time_to_autologout = time() + 8 - vstatus.last_timeout_refresh = None + vstatus.cur_pin = '' + vstatus.mk.set_message('PIN: ') + logging.info('need pin for user %s'%vstatus.cur_user) + vstatus.state = STATE_GETTING_PIN + return + + +def handle_idle_key(state, event, params, v, vstatus): + #print "handle_idle_key (s,e,p)", state, " ", event, " ", params + + key = params + + if key == 11: + vstatus.cur_user = '' + vstatus.mk.set_message(GREETING) + idle_in(vstatus,5) + choose_idler() + return + + vstatus.state = STATE_GETTING_UID + run_handler(event, key, v, vstatus) + + +def handle_idle_tick(state, event, params, v, vstatus): + ### State logged out ... initiate idler in 5 (first start?) + if vstatus.time_to_idle == None and vstatus.cur_user == '': + vstatus.time_to_idle = time() + 5 + choose_idler() + + ### State idling + + if vstatus.time_to_idle is not None and time() > vstatus.time_to_idle: + idle_step() + + if vstatus.time_to_idle is not None and time() > vstatus.time_to_idle + 30: + vstatus.time_to_idle = time() + choose_idler() + + ### + + vstatus.mk.update_display() + + +def handle_door_idle(state, event, params, v, vstatus): + # don't care right now. + pass + +def handle_door_event(state, event, params, v, vstatus): + vstatus.time_to_idle = None + + if params == 1: #door open + vstatus.state = STATE_DOOR_OPENING + logging.warning("Entering open door mode") + v.display("-FEED ME-") + #door_open_mode(v); + vstatus.cur_user = '' + vstatus.cur_pin = '' + elif params == 0: #door closed + vstatus.state = STATE_DOOR_CLOSING + idle_in(vstatus, 5) + + logging.warning('Leaving open door mode') + v.display("-YUM YUM!-") + +def idle_in(vstatus,seconds): + vstatus.time_to_idle = time() + seconds + +def return_to_idle(state,event,params,v,vstatus): + if vstatus.time_to_idle is not None and time() > vstatus.time_to_idle: + vstatus.mk.set_message(GREETING) + vstatus.state = STATE_IDLE + return + if not vstatus.time_to_idle: + vstatus.mk.set_message(GREETING) + vstatus.state = STATE_IDLE + return + +def create_state_table(vstatus): + vstatus.state_table[(STATE_IDLE,TICK,1)] = handle_idle_tick + vstatus.state_table[(STATE_IDLE,KEY,1)] = handle_idle_key + vstatus.state_table[(STATE_IDLE,DOOR,1)] = handle_door_event + + vstatus.state_table[(STATE_DOOR_OPENING,TICK,1)] = handle_door_idle + vstatus.state_table[(STATE_DOOR_OPENING,DOOR,1)] = handle_door_event + vstatus.state_table[(STATE_DOOR_OPENING,KEY,1)] = do_nothing + + vstatus.state_table[(STATE_DOOR_CLOSING,TICK,1)] = return_to_idle + vstatus.state_table[(STATE_DOOR_CLOSING,DOOR,1)] = handle_door_event + vstatus.state_table[(STATE_DOOR_CLOSING,KEY,1)] = do_nothing + + vstatus.state_table[(STATE_GETTING_UID,TICK,1)] = handle_getting_uid_idle + vstatus.state_table[(STATE_GETTING_UID,DOOR,1)] = do_nothing + vstatus.state_table[(STATE_GETTING_UID,KEY,1)] = handle_getting_uid_key + + vstatus.state_table[(STATE_GETTING_PIN,TICK,1)] = handle_getting_pin_idle + vstatus.state_table[(STATE_GETTING_PIN,DOOR,1)] = do_nothing + vstatus.state_table[(STATE_GETTING_PIN,KEY,1)] = handle_getting_pin_key + + vstatus.state_table[(STATE_GET_SELECTION,TICK,1)] = handle_get_selection_idle + vstatus.state_table[(STATE_GET_SELECTION,DOOR,1)] = do_nothing + vstatus.state_table[(STATE_GET_SELECTION,KEY,1)] = handle_get_selection_key + +def get_state_table_handler(vstatus, state, event, counter): + return vstatus.state_table[(state,event,counter)] + def run_forever(rfh, wfh, options, cf): v = VendingMachine(rfh, wfh) vstatus = VendState(v) + create_state_table(vstatus) logging.debug('PING is ' + str(v.ping())) @@ -394,9 +578,12 @@ def run_forever(rfh, wfh, options, cf): vstatus.mk.set_message(GREETING) setup_idlers(v) + choose_idler() + vstatus.mk.set_message("Booted") - # This main loop is hideous and the work of the devil - mtearle + # This main loop was hideous and the work of the devil. + # This has now been fixed (mostly) - mtearle # # # notes for later surgery @@ -404,7 +591,7 @@ def run_forever(rfh, wfh, options, cf): # V # d[ ] = (method) # - # return state + # ( return state - not currently implemented ) while True: if USE_DB: @@ -413,63 +600,20 @@ def run_forever(rfh, wfh, options, cf): except DispenseDatabaseException, e: logging.error('Database error: '+str(e)) - if vstatus.time_to_autologout != None: - time_left = vstatus.time_to_autologout - time() - if time_left < 6 and (vstatus.last_timeout_refresh is None or vstatus.last_timeout_refresh > time_left): - vstatus.mk.set_message('LOGOUT: '+str(int(time_left))) - vstatus.last_timeout_refresh = int(time_left) - vstatus.cur_selection = '' - - if vstatus.time_to_autologout != None and vstatus.time_to_autologout - time() <= 0: - vstatus.time_to_autologout = None - vstatus.cur_user = '' - vstatus.cur_pin = '' - vstatus.cur_selection = '' - vstatus.mk.set_message(GREETING) - - if vstatus.time_to_autologout and not vstatus.mk.done(): - vstatus.time_to_autologout = None - if vstatus.cur_user == '' and vstatus.time_to_autologout: - vstatus.time_to_autologout = None - if len(vstatus.cur_pin) == PIN_LENGTH and vstatus.mk.done() and vstatus.time_to_autologout == None: - # start autologout - vstatus.time_to_autologout = time() + 15 - vstatus.last_timeout_refresh = None - - if vstatus.time_to_idle == None and vstatus.cur_user == '': - vstatus.time_to_idle = time() + 5 - choose_idler() - if vstatus.time_to_idle is not None and vstatus.cur_user != '': - vstatus.time_to_idle = None - - if vstatus.time_to_idle is not None and time() > vstatus.time_to_idle: - idle_step() - - if vstatus.time_to_idle is not None and time() > vstatus.time_to_idle + 30: - vstatus.time_to_idle = time() - choose_idler() - - vstatus.mk.update_display() e = v.next_event(0) (event, params) = e - if event == TICK: - e = v.next_event(0.05) - (event, params) = e + vstatus.counter=1 + run_handler(event, params, v, vstatus) - if event == TICK: - handle_tick_event(event, params, v, vstatus) - continue - vstatus.time_to_idle = None - logging.debug('Got event: ' + repr(e)) - - if event == DOOR: - handle_door_event(event, params, v, vstatus) - elif event == SWITCH: - handle_switch_event(event, params, v, vstatus) - elif event == KEY: - handle_key_event(event, params, v, vstatus) +# logging.debug('Got event: ' + repr(e)) + + +def run_handler(event, params, v, vstatus): + handler = get_state_table_handler(vstatus,vstatus.state,event,vstatus.counter) + if handler: + handler(vstatus.state, event, params, v, vstatus) def connect_to_vend(options, cf): -- 2.20.1